* Overheating: This can cause serious and expensive engine damage, including warping the cylinder head or cracking the engine block.
* Loss of coolant: This will cause the engine to overheat more quickly.
* Reduced engine performance: The lack of coolant can lead to decreased engine efficiency and power.
* Steam and potential burns: Leaking coolant can create steam, posing a safety hazard.
Driving with a blown freeze plug is risky and could result in a costly repair or even a complete engine failure. The car should be towed or otherwise transported to a repair shop.